<template>
  <div class="wrapper">
    <!-- header部分 -->
    <header>
      <p>确认订单</p>
    </header>
    <!-- 订单信息部分 -->
    <div class="order-info">
      <h5>订单配送至：</h5>
      <div class="order-info-address" @click="toUserAddress">
        <p>{{deliveryaddress!=null?deliveryaddress.address:'请选择送货地址'}}</p>
        <i class="fa fa-angle-right"></i>
      </div>
      <p>{{user.userName}}{{user.userSex | sexFilter}} {{user.userId}}</p>
    </div>
    <h3>{{business.businessName}}</h3>
    <!-- 订单明细部分 -->
    <ul class="order-detailed">
      <li v-for="item in cartArr">
        <div class="order-detailed-left">
          <img :src="item.food.foodImg">
          <p>{{item.food.foodName}} x {{item.quantity}}</p>
        </div>
        <p>&#165;{{item.food.foodPrice*item.quantity}}</p>
      </li>
    </ul>
    <div class="order-deliveryfee">
      <p>配送费</p>
      <p>&#165;{{business.deliveryPrice}}</p>
    </div>
    <!-- 合计部分 -->
    <div class="total">
      <div class="total-left">
        &#165;{{totalPrice}}
      </div>
      <div class="total-right" @click="toPayment">
        去支付
      </div>
    </div>
  </div>
</template>
<script>
export default {
  name: "Orders",
  data() {
    return {
      businessId: this.$route.query.businessId, // 商家 ID
      business: {}, // 商家信息
      user: {}, // 用户信息
      cartArr: [], // 购物车食品列表
      deliveryaddress: {}, // 送货地址
    };
  },
  created() {
    this.initUser();
    this.initDeliveryAddress();
    this.getBusinessInfo();
    this.getCartItems();
  },
  computed: {
    // 计算总价
    totalPrice() {
      let totalPrice = 0;
      for (let cartItem of this.cartArr) {
        totalPrice += cartItem.food.foodPrice * cartItem.quantity;
      }
      totalPrice += this.business.deliveryPrice;
      return totalPrice;
    },
  },
  filters: {
    // 性别过滤器
    sexFilter(value) {
      return value == 1 ? "先生" : "女士";
    },
  },
  methods: {
    // 初始化用户信息
    initUser() {
      const token = localStorage.getItem("token");
      if (token) {
        try {
          const payload = JSON.parse(atob(token.split(".")[1])); // 解析 JWT
          this.user = { userId: payload.sub }; // 假设 userId 存在于 sub 字段中
        } catch (error) {
          console.error("Token 解析失败:", error);
          this.user = null;
          this.redirectToLogin();
        }
      } else {
        this.user = null;
        this.redirectToLogin();
      }
    },
    // 初始化送货地址
    initDeliveryAddress() {
      if (this.user && this.user.userId) {
        this.deliveryaddress = this.$getLocalStorage(this.user.userId);
      }
    },
    // 获取商家信息
    getBusinessInfo() {
      this.sendRequest(
          "BusinessController/getBusinessById",
          "POST",
          { businessId: this.businessId }
      )
          .then((response) => {
            this.business = response.data;
          })
          .catch((error) => {
            console.error("获取商家信息失败:", error);
          });
    },
    // 获取购物车中的食品
    getCartItems() {
      if (!this.user || !this.user.userId) {
        this.redirectToLogin();
        return;
      }

      this.sendRequest(
          "CartController/listCart",
          "POST",
          { userId: this.user.userId, businessId: this.businessId }
      )
          .then((response) => {
            this.cartArr = response.data;
          })
          .catch((error) => {
            console.error("获取购物车数据失败:", error);
          });
    },
    // 跳转到用户地址页面
    toUserAddress() {
      this.$router.push({
        path: "/userAddress",
        query: { businessId: this.businessId },
      });
    },
    // 跳转到支付页面
    toPayment() {
      if (!this.deliveryaddress || !this.deliveryaddress.daId) {
        alert("请选择送货地址！");
        return;
      }

      // 创建订单
      this.sendRequest(
          "OrdersController/createOrders",
          "POST",
          {
            userId: this.user.userId,
            businessId: this.businessId,
            daId: this.deliveryaddress.daId,
            orderTotal: this.totalPrice,
          }
      )
          .then((response) => {
            const orderId = response.data;
            if (orderId > 0) {
              this.$router.push({
                path: "/payment",
                query: { orderId },
              });
            } else {
              alert("创建订单失败！");
            }
          })
          .catch((error) => {
            console.error("创建订单失败:", error);
          });
    },
    // 通用请求方法
    sendRequest(url, method, data) {
      const token = localStorage.getItem("token");
      if (!token) {
        console.error("Token 不存在，跳转登录页");
        this.redirectToLogin();
        return Promise.reject("未登录");
      }

      return this.$axios({
        method,
        url,
        data: this.$qs.stringify(data),
        headers: {
          Authorization: `Bearer ${token}`,
          "Content-Type": "application/x-www-form-urlencoded",
        },
        withCredentials: true,
      });
    },
    // 跳转到登录页面
    redirectToLogin() {
      this.$router.push({ path: "/login" });
    },
  },
};
</script>
<style scoped>
/****************** 总容器 ******************/
.wrapper {
  width: 100%;
  height: 100%;
}
/****************** header部分 ******************/
.wrapper header {
  width: 100%;
  height: 12vw;
  background-color: #0097FF;
  color: #fff;
  font-size: 4.8vw;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
}
/****************** 订单信息部分 ******************/
.wrapper .order-info {
  /*注意这里，不设置高，靠内容撑开。因为地址有可能折行*/
  width: 100%;
  margin-top: 12vw;
  background-color: #0097EF;
  box-sizing: border-box;
  padding: 2vw;
  color: #fff;
}
.wrapper .order-info h5 {
  font-size: 3vw;
  font-weight: 300;
}
.wrapper .order-info .order-info-address {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  user-select: none;
  cursor: pointer;
  margin: 1vw 0;
}
.wrapper .order-info .order-info-address p {
  width: 90%;
  font-size: 5vw;
}
.wrapper .order-info .order-info-address i {
  font-size: 6vw;
}
.wrapper .order-info p {
  font-size: 3vw;
}
.wrapper h3 {
  box-sizing: border-box;
  padding: 3vw;
  font-size: 4vw;
  color: #666;
  border-bottom: solid 1px #DDD;
}
/****************** 订单明细部分 ******************/
.wrapper .order-detailed {
  width: 100%;
}
.wrapper .order-detailed li {
  width: 100%;
  height: 16vw;
  box-sizing: border-box;
  padding: 3vw;
  color: #666;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.wrapper .order-detailed li .order-detailed-left {
  display: flex;
  align-items: center;
}
.wrapper .order-detailed li .order-detailed-left img {
  width: 10vw;
  height: 10vw;
}
.wrapper .order-detailed li .order-detailed-left p {
  font-size: 3.5vw;
  margin-left: 3vw;
}
.wrapper .order-detailed li p {
  font-size: 3.5vw;
}
.wrapper .order-deliveryfee {
  width: 100%;
  height: 16vw;
  box-sizing: border-box;
  padding: 3vw;
  color: #666;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 3.5vw;
}
/****************** 订单合计部分 ******************/
.wrapper .total {
  width: 100%;
  height: 14vw;
  position: fixed;
  left: 0;
  bottom: 0;
  display: flex;
}
.wrapper .total .total-left {
  flex: 2;
  background-color: #505051;
  color: #fff;
  font-size: 4.5vw;
  font-weight: 700;
  user-select: none;
  display: flex;
  justify-content: center;
  align-items: center;
}
.wrapper .total .total-right {
  flex: 1;
  background-color: #38CA73;
  color: #fff;
  font-size: 4.5vw;
  font-weight: 700;
  user-select: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
}
</style>